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Medical implantable lead

a technology of implantable lead and implantable electrode, which is applied in the direction of external electrodes, transvascular endocardial electrodes, electrotherapy, etc., can solve the problem of not being able to introduce a flat body into the body cavity easily, and achieve the effect of facilitating the manufacture of lead

Active Publication Date: 2012-07-17
ST JUDE MEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The twisted design enhances flexibility in all directions, facilitating implantation into body cavities and simplifies manufacturing by utilizing modern strip conductor technology, while the central cavity serves as a functional lumen for guiding the lead.

Problems solved by technology

However, it is not an easy task to introduce a flat body into a body cavity, since it has different flexibility in different planes in space due to its different width and thickness.
This causes difficulties in, for example, forcing the lead into a branching cavity.

Method used

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  • Medical implantable lead
  • Medical implantable lead
  • Medical implantable lead

Examples

Experimental program
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Embodiment Construction

[0029]Referring to FIG. 1, the medical implantable lead 101 generally comprises an elongate body 103, which is basically flat, i.e. ribbon shaped, but a portion thereof has been helically twisted around a longitudinal axis of the elongate body 103. As shown in FIG. 1, typically the portion equals to the whole body 103. In other words, the body turns about its own longitudinal axis. Further, the lead 101 comprises an electrode tip 105 at a distal end 107 thereof. At a proximal end 109 of the lead 101 it is prepared for connection with an implantable device, such as a pacemaker or some other desirable device, see FIG. 7 at 703. The lead 101 comprises plural conductors, as for example exemplified at 203 in FIG. 2, extending between the proximal and distal ends 107, 109.

[0030]In FIGS. 2a and 2b, a first embodiment of the lead 201 is shown in cross-sectional views taken within the flat elongate and helically twisted body. In FIG. 2a a basic state is shown, and in FIG. 2b an implantation ...

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Abstract

A medical implantable lead has a proximal end and a distal end, and a flexible flat elongate body. The elongate body includes a layer of strip conductors extending along the length of the flat elongate body, a top insulating layer, and a bottom insulating layer. The layer of strip conductors is sealingly enclosed between the top and bottom insulating layers, and at least a major portion of the flat elongate body is twisted into an elongate helical portion having a central cavity extending longitudinally of the helical portion.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a medical implantable lead having a proximal end and a distal end, and a flat elongate body.[0003]2. Description of the Prior Art[0004]A medical implantable lead is preferably designed as thin as possible. It also needs to be well flexible in order to be able to follow narrow winding body cavities. A conventional structure is an elongate lumen defined, i.e. formed, by coiled conductors carrying electrical signals for different applications. The lumen is used for facilitating implantation of the flexible lead into a body by means of a slightly stiffer guide wire, stylet or the like, which is inserted into the lumen and manoeuvred by an operator, typically a surgeon.[0005]Modern technology imposes demands on increased ability to carry more and more signals for sensing, monitoring and commanding purposes. These demands introduce a conflict between outer diameter of the lead and number of av...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): A61N1/05
CPCA61N1/05H01B7/0823A61N1/056
Inventor STRANDBERG, HANSNORLIN-WEISSENRIEDER, ANNAHENRIQUEZ, LEDAHARSTROM, EVASJOGREN, MIKAELNAESLUND, ANNIKANILSSON, SUSANNESTEGFELDT, OLOF
Owner ST JUDE MEDICAL